Excessive engine oil consumption

Diagnostic procedure 

• 1. Check for oil leaks.
• 2. Check for worn valve guide(s); or worn valve seal(s) .
• 3. Check for a damaged or worn piston ring(s) .
• 4. Check for damaged or worn engine internal parts (cylinder wall, pistons, etc.) .

Also check for 

Check the maintenance records as engine oil that is worn out burns off at a higher rate